chore: add node badge to README

[jhonatantft]

Related issue: #22

What changes this code is introducing?

• Adds a badge that tells the user the lowest supported version of node
• Specified the version in the engines property in package.json

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[jhonatantft]

@pestevez Could you review it please?

[pestevez]

Apologies for the delayed response, @jhonatantft. The changes look good. Would you mind sharing how you landed at that specific version being the minimum one supported?

[jhonatantft]

@pestevez Thanks for the answer. I managed to get to that specific version by doing tests with each Node version. In the older version than this, I received several errors and was unable to use the application properly.

[pestevez]

I tried with version 8.11.3 (one lower than the one proposed) and it worked, but it didn't work with version 8.0.0. I am fine with keeping the one you have, since anyway the LTS version of node as of today is 14.15.5.

Can you please rebase, run npm install, AND include the package-lock.json file in your PR? Thanks again.

[jhonatantft]

Done! @pestevez

[pestevez]

Thanks for your contribution @jhonatantft! Feel free to merge it.

[pestevez]

You'll have to rebase again since we merged another PR that modified the lock file. I can take another look after you repeat the same steps described above.